This is the Panasonic AY-HDVM63MQ Mini 63 Minute Master Quality HDV/Pro DV-Compatible Tape . A major feature of this tape is that it does not produce a high error rate. With reduced drop-out and increased response (output), more desirable recording results can be achieved. The higher production quality of this tape means fewer jams on the tape head as well as more reliable playback and rewind confidence.